Telearape pole



(No Model.) m 2 Sheets-Sheet 1.

S. T. SUI 1.

TELEGRAPH POLE.

Patented Nov. .27, 1883.

jia/yevjoir. 49 1. Sui 5 2 b e e .n S S t e e h S 2 T I U S T S (No Model.)

TELEGRAPH POLE.

' No. 289,320. Patented Nov. 27, 1883.

UNITED STATES SAMUEL T. SUIT, OF SUITLAND, MARYLAXD.

TELEGRAPH-POLE.

SPECIFICATION forming part of Letters Patent No. 289,320,

dated November 27, 1883.

Application filed August 24, 1883. (No model.)

To all whom, it may concern.-

Be it known that I, SAMUEL T. SUIT, a citizen of the United States, residing at Suitland, in the county of Prince Georges and State of Maryland, have invented new and useful Improvements in Telegraph-Poles. of which the following is a specification.

My invention relates to telegraplrpoles, its purpose being to furnish a metallic post of suitable strength and lightness, which shall be durable in use, and to provide insulators therefor which may e removed and inserted at pleasure.

It is also an object of my invention to provide a removable insulator, with which the wire may be connected after it is stretched.

Referring to the drawings, Figure l is a view partly in elevation and partly in section. Fig. 2 is a cross-section of Fig. 1. Fig. 3 is a view in section and partly in elevation, showing a modification, the parts being sepa rated. Fig. 4 is asimilar view, showing the parts connected. Fig. 5 is an elevation showing wire-supporting frames and the manner of connecting the same with the poles. Fig. 6 is an elevation showing a modification in the construction of the pole. Fig. 7 is a crosssection of Fig. 6. Fig. 8 is an elevation illustrating a modification of the device shown in Fig. 1. Fig. 9 is a cross-section of Fig. 8. Fig. 10 is an elevation showing the post in Figs. 6 and '7, with wire-supporting strips at tached. Fig. 11 is a view of a portion of the wall of the tubular post, showing the manner of attaching the insulators. Fig. 12 is a similar view of a small portion of the wire-supporting strips, or of the edge of the triangular pole shown in Fig. 7, illustrating the construction whereby the wire may be laid in the insulator after it is stretched. Fig. 13 is a perspective of one of the insulators detached.

A in said drawings represents a short wooden pedestal, which is sunk in the ground to such a depth as to give it asolid support. The upper end, A, of this pedestal is turned down, leaving a shoulder, a, and upon the same is driven, shrunk, or wedged a sleeve, A having an exterior screw-thread cut from end to end.

B is the metal post, which is formed in two half-sections, each having flanges b b, which meet each other when the two sections are united. Rivets b are passed through these flanges, by which the two half-sections are bound together, forming an iron tube of the necessary length, which is of equal diameter throughout. At its lower end a female thread is formed within the post 13, which is then turned upon the threaded sleeve A until its lower end rests upon the shoulder a of the pedestal. Instead of threading the sleeve A", its surface may be left smooth and the tubular pole slipped thereon, bolts b being passed through the wooden pedestal to fasten the parts in place, such construction being shown in Figs. 3 and 4.

The line-wires are supported in the upper portion of the pole, where they rest in glass insulators C, which are shown in detail in Fig. 13. They consist each of a double disk of glass, 0, connected together by a short neck, 0, the opening for the wire being formed centrally therein. These insulators are connected with the pole in the following manner: Within the tubular wall 13 are formed openings D, having a size at top sufficient to admit the disk at either end of the insulator but contracting downward to such a degree that at the bottom the aperture will closely embrace the glass neck cbetweeu the disks 0. hen the insulator is inserted in the opening until one end lies within and the other without the wall of the pole, and then dropped until it rests in the lower contracted end of the opening I), the neck 0 will be partly surrounded by the edges of the aperture, while the disks 0 0 will lie against the inner and outer surfaces of the wall, and thus be retained in place. In the form of post shown in Figs. 1, 2, 8, and 9 the wire is carried through an insulator in each wall, and in order to economize space the insulators may be arranged alternately. \Vhen it is necessary, however, to support-a greater number of wires than can be carried in the body of the post, a metallic supporting frame, B, may be employed, consisting of a rectangular plate, 0, which is socured to the flange Z) by rivets 0. Vertical bars 6 and transverse pieces 0'' may also be employed in connection therewith, and in each of these parts are formed openings D at suitable intervals, within which the insulators G are placed in the manner already described.

Instead of a rectangular frame, as shown in Fig. 5, a curved supporting-bar may be bolted to each flange, as shown in Fig. 10.

The pole shown in Fig. 1, made in two equal parts, and having the same diameter throughout, is easy to manufacture, as each portion may be rolled out in dies. I propose, however, to make the pole in the form of a solid tapering tube, as illustrated in Fig. 8, which may be mounted directly upon the pedestal A,without the interposed sleeve A}. I also propose making the body of the pole in three sections, F FF, each concave upon the outer face, the parts being placed together in the manner shown in Fig. 7, and united by rivets f, passing through their edges. In this construction the insulators O are placed in openings formed near the edges of the plates F, said openings being similar to those shown in Fig. 11. The wires resting in said insulators are represented in the drawings at w, and they pass through the same diagonally. Supporting-frames similar to those shown in Figs. 5 and may also be used in connection with this form of post, their ends being bolted to the edges of the united sections F.

The pole, made in three equal sections, as just described, may be tapered from the bottom toward the top by forming each section F with a slightlydecreasing width. At its bottom it has a circular socket, F, with a tapered portion, f, above. The pole may be mounted upon a wooden pedestal, F having a conical extremity, f". When placed thereon, the socket F encircles the body of the pedestal, while the tapered portion f rests upon the conical end of the latter.

To permit the engagement of the line-wires with the insulators after the wires have been raised and stretched, instead of drawing the whole length of wire through the insulator, I propose, wherever the form of post shown in Fig. 10 is employed, as well as in the supporting-frames shown in Figs. 5' and 10, to cut a slot, 9, through the edge of the metal support, into the opening D, and to form aslot, g, in the insulator, as shown in Fig. 12, whereby the 1. A tubular metallic telegraph-pole mounted upon a wooden pedestal sunk in the ground, and having its wall constructed with openings having contracted lower ends for receiving the insulators for the telegraph-wire, substantially as described.

2. A tubular metallic pole having its wall constructed with openings having contracted lower ends for receiving detachable insulators for the telegraph-wires, substantially as described.

3. Atubular metallic telegraph-pole mounted upon a wooden pedestal sunk in the ground, and having its wall constructed with openings having contracted lower ends, in combination with insulators composed of two disks joined by a short neck, said insulators beinginserted at the widest ends of the converging openings, and closely embraced at the narrowest ends thereof, substantially as described.

4. The combination, with a wooden pedestal set in the earth and having a diminished upper portion, of a metallic sleeve surrounding the latter, and having an exterior thread, and the tubular metallic pole having a female thread cut in its lower end, substantially as described.

5. A telegraph-pole consisting of a metallic tube having its wall constructed with openings containing insulators, and metallic wiresupporting frames riveted to flanges on the tube, and provided with openings containing insulators, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

S. T. SUIT. lVitnesses:

J AMES L. Nonnrs, J os. S. CooMBs. 

